EP1186066A1 - Dispositif electroluminescent ou a cellules photoelectriques, a conditionnement protecteur - Google Patents

Dispositif electroluminescent ou a cellules photoelectriques, a conditionnement protecteur

Info

Publication number
EP1186066A1
EP1186066A1 EP00941111A EP00941111A EP1186066A1 EP 1186066 A1 EP1186066 A1 EP 1186066A1 EP 00941111 A EP00941111 A EP 00941111A EP 00941111 A EP00941111 A EP 00941111A EP 1186066 A1 EP1186066 A1 EP 1186066A1
Authority
EP
European Patent Office
Prior art keywords
optoelectronic
rim
lid
film
cathode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00941111A
Other languages
German (de)
English (en)
Other versions
EP1186066B1 (fr
Inventor
Mark T. Bernius
Edmund P. Woo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Global Technologies LLC
Original Assignee
Dow Chemical Co
Dow Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co, Dow Global Technologies LLC filed Critical Dow Chemical Co
Publication of EP1186066A1 publication Critical patent/EP1186066A1/fr
Application granted granted Critical
Publication of EP1186066B1 publication Critical patent/EP1186066B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20—Light-sensitive devices
    • H01G9/2068—Panels or arrays of photoelectrochemical cells, e.g. photovoltaic modules based on photoelectrochemical cells
    • H01G9/2077—Sealing arrangements, e.g. to prevent the leakage of the electrolyte
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K39/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group H10K30/00
    • H10K39/601—Assemblies of multiple devices comprising at least one organic radiation-sensitive element
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/095—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00 with a principal constituent of the material being a combination of two or more materials provided in the groups H01L2924/013 - H01L2924/0715
    • H01L2924/097—Glass-ceramics, e.g. devitrified glass
    • H01L2924/09701—Low temperature co-fired ceramic [LTCC]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K39/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group H10K30/00
    • H10K39/30—Devices controlled by radiation
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/542—Dye sensitized solar cells

Definitions

  • This invention relates to devices having an anode, a cathode, and an optoelectronic film between the anode and the cathode.
  • the invention especially relates to such devices where the optoelectronic film comprises an organic optoelectronic material.
  • Optoelectronic devices such as photocells (for example, photodetectors, photodiodes, photovoltaics) and electroluminescent (EL) elements may be formed by sandwiching films comprising optoelectronic materials between electrodes.
  • EL electroluminescent
  • an EL device When an EL device is subjected to an applied voltage, holes injected from the anode and electrons injected from the cathode will combine in the optoelectronic material to form singlet excitons, which can undergo radiative decay, thereby liberating light.
  • photocells light that is incident upon the optoelectronic material is converted into electric current.
  • Optoelectronic devices have been made with certain inorganic and organic semi-conductors as the optoelectronic materials.
  • the film comprising the optoelectronic material may comprise a plurality of layers based on materials of the desired properties.
  • Constituent organic optoelectronic materials may be polymeric, as described by Kraft and coworkers in An ⁇ ew. Chem. Int. Ed., Vol. 37, pp. 402-428, (1998), or monomeric, as described by Tang and VanSlyke in U.S. Patent 4,885,21 1 and by Tang in Information Display, pp. 16-19, October, 1996.
  • Other suitable materials include those disclosed in U.S.
  • the anode is typically a transparent or semi-transparent conducting material, deposited on a transparent substrate, such as glass, so that light can escape from the EL element or so that the optoelectronic film can be exposed to light.
  • ITO Indium-tin-oxide
  • ITO is generally the preferred anode material because of its excellent optical transparency and electrical conductivity.
  • the cathode is a metal of low work function, which can be deposited as pin-hole-free films by evaporation in high vacuum or by sputtering.
  • Preferred metals are lithium, calcium and magnesium, as well as their alloys and blends with metals of higher work function.
  • the use of low work function metals in EL elements leads to higher EL efficiency but also environmental instability, as these metals are known to be extremely sensitive to oxygen and moisture in ambient air. Indeed, EL elements with calcium cathodes have been reported to lose 90 percent of their efficiency in 37 seconds in a highly humid environment according to Sheats, et al. in Science, Vol. 273, (1996), pp.
  • Magnesium is sometimes seen as a compromise choice, yet its stability in EL elements still leaves much to be desired, as Tang and VanSlyke (U.S. Patent 4,885,211 ) had shown that efficiency of these elements may drop by more than an order of magnitude in a matter of hours when exposed to an ambience, with a relative humidity of 20 percent or higher due to cathode corrosion.
  • polymer films in EL or photocell devices must also be protected from ambient oxygen and moisture as the injection of charge carriers generates highly sensitive chemical species: radical anions formed by injection of electrons and radical cations formed by injection of holes into the polymer film are readily destroyed by oxygen and water.
  • WO97/46052 teaches the use of a sheet of low melting metal alloys bonded onto the cathode of an EL element. Since the alloy layer is in direct contact with the cathode and, indeed, serves as the wiring contact, this approach is not suitable for EL elements with patterned cathodes, which is the preferred method for creating dot-matrix displays.
  • Another approach involves coating the cathode first with an organic film which is, in turn, coated with layers of metals, metal oxides, inorganic oxides, or, inorganic fluorides and the like.
  • the problem with this approach is the application of the organic coating onto the cathode. Once an EL element is formed, no part of it may be exposed to moisture, organic solvent, oxygen, and elevated temperatures without causing damage. Thus, the application of an organic coating to a formed EL element, possible in principle, would be extremely difficult to accomplish without damaging the EL element in some way.
  • JP 7014675 Yet another approach described in JP 7014675 involves co-forming films which are mixtures of inorganic fluorides and oxides and plasma-polymerized poly-p- xylylene.
  • the inventor acknowledged the inferior barrier (to oxygen and moisture) properties of the polymer vs inorganic materials because of the presence of macro defects. Therefore, diluting the beneficial barrier properties of the inorganic materials with poly-p-xylylene can hardly be an advantage.
  • organic emitting materials are readily damaged by intense ultraviolet light inherent to the plasma generation process. Even if this packaging approach could protect the cathodes from oxygen and moisture in an ambient environment, it is likely to cause irreversible damage to the optoelectronic properties of the organic material.
  • a fourth approach involves sealing the flange of a metal or glass lid with a UV- curable adhesive onto the glass substrate of the EL element in vacuum or in an atmosphere of very dry nitrogen, as described by Nakada and Tohma in Display Devices, 1998, pp. 29- 32.
  • the dimensions of the lid are chosen such that there is a gap between the inner surface of the lid and the cathode.
  • the adhesive film must provide adhesion between the cover and element and barrier to the ingress of moisture and oxygen. Since adhesion and barrier properties result from different chemical designs, it's unlikely for an adhesive to perform well in both functions. Material selection would be a compromise. It is also critical that the adhesive film be freest voids and pinholes and the adhesive be free of volatile organic compounds, dissolved gas, and moisture, which would be otherwise trapped in the sealed compartment and will eventually cause device deterioration.
  • Figure 1 A is a drawing of a representative cover with a raised rim for encapsulating optoelectronic elements
  • 1 B is a cross-sectional view of the representative cover and raised rim.
  • Figure 2 shows the positioning of a representative cover relative to a representative optoelectronic element.
  • Figure 3 is a cross-section view of Figure 2 after the cover is attached to the optoelectronic element and sealed with an adhesive.
  • Figure 4 is a drawing of a glass sheet used in making a representative cover.
  • the device of this invention comprises a optoelectronic element, a cover, and an adhesive.
  • the optoelectronic element comprises a substrate bearing an anode, a film comprising an optoelectronic material, and a cathode.
  • the cover comprises a lid and a raised rim, which is recessed from the outer edge of the lid. The cover contacts the element so that the film comprising the optoelectronic material is located between the substrate and the lid, and within the region defined by the raised rim.
  • An adhesive located in a channel defined by the bottom surface of the lid from the outer edge to the rim, the rim, and the top surface of the optoelectronic element outside of the region defined by the rim, serves to attach the cover to the optoelectronic element.
  • Optoelectronic material as used herein means a material, which is capable of converting electrical charge to light and vice versa, and, optionally, whose conductivity is enhanced by exposure to light.
  • Optoelectronic element as used herein means an electroluminescent device, a photocell, or similar devices.
  • Figure 1 A shows a representative cover 2 having a lid 50 and a raised rim 60 extending from the bottom surface 51 of the lid 50.
  • the rim 60 is recessed from the outer edge 52 of the lid 50.
  • the optoelectronic element 1 shown in Figures 2 and 3 is a 4-pixel electroluminescent element.
  • the element 1 comprises a substrate 10, two strips of anode 20 and 21 on the substrate, optoelectronic material 30, which is electroluminescent and is coated over the anode 20, 21 , and the substrate 10, two strips of cathode 41 and 42 over the optoelectronic material 30, the cathode strips are in contact with conducting pads 22 and 23.
  • Alternative means of contacting the anode and cathode to the optoelectronic material may be used.
  • a continuous layer of anode material could be covered by an image-wise distribution of an insulating material, such as a photoresist.
  • the optoelectronic material would then be applied over the anode and the imaged insulating layer. Such a system would provide a luminescent image negative to the image of the insulating material.
  • other supplementary layers which are known in the art, such as barrier or protective layers, may also be used.
  • the conducting pads 22, 23 and the anodes In an electroluminescent device, the conducting pads 22, 23 and the anodes
  • the conducting pads 22, 23 and the anodes 20, 21 are connected to a current collector, a current detector or another device run by the generated electricity.
  • the substrate 10 for the optoelectronic element 1 is a rigid, and, preferably, transparent material, such as glass or quartz. At least one of the substrate 10 or the lid 50 should be transparent so that light can enter or exit the device.
  • the anode 20, 21 is preferably a transparent or semi-transparent material as is known in the art, such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the thickness of the anode is preferably less than about 1 micron, more preferably less than 0.5 micron, and most preferably less than 0.25 micron.
  • the conducting pads may comprise any suitable conductive materials, such as an inert metal (for example, gold) or the material used in the anode (for example, ITO).
  • the conductive pads preferably have a thickness less than about 1 micron, more preferably less than 0.5 micron and most preferably less than 0.25 micron.
  • the cathode 41 , 42 is typically a metal or metal alloy having a low work function.
  • Preferred materials include lithium, calcium, magnesium, alloys and blends of such metals with metals of higher work function.
  • a thin, electrically insulating inorganic film is applied over the cathodes by either thermal evaporation or sputtering.
  • Materials for this insulating film may be selected from among oxides of Ca, Mg, Si, Ge, and Mo, fluorides of Li, Ca or Mg, and nitrides of Si, and Ge.
  • film thickness is no greater than 0.05 mm (millimeter) and no less than 0.001 mm with the provision that there is maintained a space between the inner surface of the lid and the surface of this film.
  • the optoelectronic material is preferably an organic charge carrier transporting material.
  • organic charge carrier transporting material For electroluminescent devices these materials must emit light and for photodiodes these materials must be capable of generating or carrying current when exposed to light.
  • These materials are typically highly conjugated materials and may be monomeric or polymeric. Suitable monomeric materials include, for example, tertiary aromatic amines, metal complexes of 8-hydroxyquinoline, diarylbutadienes, stilbenes, as disclosed in U.S. Patent 4,769,292 (Tang, et al.) and Tang, Information Display, October (1996), pp. 16-19.
  • suitable polymeric materials include polyarylene vinylenes and polyfluorenes. See, for example, Kraft, et al., An ⁇ ew.
  • the film comprising the optoelectronic material may also comprise other materials blended with the optoelectronic material as may be known in the art, such as stabilizers, adhesion promoters, fillers, and matrix materials.
  • the film may comprise more than one layer of various materials, which may be other optoelectronic materials or non-optoelectronic materials, such as those which provide barrier or protective properties.
  • Other materials or layers added to the film should be chosen so as not to unduly inhibit the light emission or current generating properties of the film.
  • the rigid transparent substrate 10 bearing at least one transparent anode 20 is coated with the optoelectronic material or its precursor.
  • the cathode is deposited as a pin-hole- free film by evaporation in high vacuum or by sputtering.
  • the cover 2 is placed on the optoelectronic element 1 so that the rim 60 contacts the top surface(s) of the element 1.
  • the height, b, of the rim 60 is preferably such that there is no contact between the top surface of the optoelectronic element 1 and the lid 50.
  • Such a gap is desirable to protect the surface of the element from damage.
  • the gap preferably has a thickness of at least 1 micron, more preferably at least 2 microns, and most preferably at least 5 microns.
  • the cathodes 41 and 42 which are typically located at the top of the element, are particularly fragile.
  • the height, b, of the rim 60 is preferably no greater than 3 mm and no less than 0.05 mm for most optoelectronic elements.
  • the width, a, of the rim 60 is preferably no greater than 5 mm and no less than 0.1 mm.
  • the rim 60 is preferably recessed from the outer edge of the lid by a distance, c, no greater than 5 mm and no less than 0.5 mm.
  • the lid should preferably be fabricated from a rigid material with high barrier properties to oxygen and moisture.
  • suitable materials include, for example, glass, quartz, ceramic, aluminum, and stainless steel. Commercially available plastics may also be selected if the thus fabricated lid is given a barrier coating prior to use. Barrier coating materials include oxides of aluminum and silicon, and nitrides of silicon and germanium.
  • the lid need not be electrically insulating. However, the rim, or portions of the rim which contact the optoelectronic element, should be electrically insulating. The rim may be of the same or different material from the lid. Again, high barrier properties to oxygen and moisture are desired.
  • barrier properties provide one of the benefits of this invention, which is improved oxygen and moisture barrier, compared with a lid with no rim, which would simply be attached with an adhesive having relatively poor barrier properties.
  • the rim also prevents the adhesive from seeping into the internal portions of the device, which could seriously damage the device.
  • silicon nitride a high barrier electrically insulating material, may be deposited onto a sheet of the lid material by sputtering through a mask to form the rim.
  • the rim may be formed by physical or chemical etching of the lid material, such as glass, or the rim may be formed by stamping or machining from a metal sheet, followed by covering the surface of the rim with a layer of electrically insulating film, such as aluminum oxide, silicon dioxide, silicon nitride, and the like.
  • the thickness of the lid may vary with material choice. However, the thickness should be such to provide resistance to flexing during handling.
  • the cover is positioned in a manner to cover the optoelectronic material, while leaving portions of at least some of the conductive materials exposed for connections to a power source (for an electroluminescent device) or a current detector or collector (for photodetectors and photodiodes).
  • a power source for an electroluminescent device
  • a current detector or collector for photodetectors and photodiodes
  • the cover also completely covers the relatively fragile cathodes. It may be noted from Figures 2 and 3 that there is a very small gap between the rim 60 and the substrate 10 corresponding to the thickness of the bonding pads 22, 23 and/or the anode 20, 21. This gap, however, is small enough that there is negligible effect on the barrier properties of the packaging of the device as a whole.
  • the adhesive while not having excellent oxygen and moisture barrier properties, does provide some additional protection.
  • the adhesive is advantageously free or substantially free of volatile organic components and, preferably, cures at or near room temperatures. UV-curable adhesives and two-component epoxy adhesives having these characteristics would be suitable.
  • the adhesive may be applied by a syringe manually or by an automated dispenser equipped with a fine nozzle, as in many of the commercially available adhesive dispensers, after the cover is put in place.
  • the inner surface of the lid is coated with a thin film of reactive metal which serves as a sacrificial "getter” of traces of moisture, oxygen, and other potential harmful contaminants trapped inside the sealed cavity.
  • the getter film is preferably fabricated by thermal evaporation or sputtering, preferably of calcium, barium, magnesium, and the like. Since the amount of trapped contaminants should be very low if the sealing is conducted in a dry, inert atmosphere, film thickness need not exceed 0.5 mm with the provision that there is maintained a space between the cathodes and the getter film.
  • This example illustrates the packaging of an EL element whose active area dimensions, defined as the area of the cathode, are approximately 58 mm by 40 mm constructed on a piece of ITO-glass of the dimension 75 mm by 50 mm.
  • the ITO-glass was coated with a photoresist material, which then image-wise was exposed to light and developed to provide an image of an insulating material over the ITO.
  • a layer of organic, polymeric optoelectronic material was then applied over the imaged photoresist and ITO.
  • a 35 nm (nanometer) calcium cathode over-coated with 270 nm of aluminum was then applied by vacuum evaporation.
  • the lid was fabricated in the following manner.
  • a rectangular gasket (see Figure 4) made from an elastic film with outside dimensions of 70 mm by 46 mm and an uniform width of about 1.5 mm was applied onto a piece of glass 73 mm by 50 mm, such that the outer edges of the gasket were uniformly recessed from the perimeter of the glass sheet, as shown in Figure 4.
  • the side of the glass sheet with the gasket was subjected to sand-blasting until the thickness was reduced to about 1.4 mm from the original 1.8 mm.
  • the area covered by the elastic film gasket was not etched by the sandblasting and effectively became the raised rim.
  • the gasket was peeled off and the now completed lid was cleaned and dried.
  • a 100 nm film of barium was vacuum deposited onto the inside cavity formed by the raised rim. This serves as the "getter.”
  • the EL element and the lid were then positioned together as shown in Figures 2 and 3.
  • an UV adhesive (Nordland Optical Adhesive 88 from Nordland Corp., New Brunswick, N.J.) was applied by a syringe in the manner already described.
  • the adhesive was cured by UV light for 3 seconds from a light source Dymax Light Welder PC3, 2.5 watt cm 2 , 320-390 nm from Dymax Corp., Torrington, CT.
  • the packaged device can be operated and/or stored in ambient air for long periods of time (at least several weeks) without discernable degradation of luminance, as determined by visual inspection. The device was still functioning at the time of filing of this application.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Le dispositif de l'invention comprend un élément optoélectronique (1), une enveloppe (2) et un adhésif (70). Ledit élément optoélectronique comprend un substrat (10) portant une anode (20, 21), un film comprenant un matériau optoélectronique (30) et une cathode (41, 42). L'enveloppe comporte un couvercle (50) et un bord surélevé (60), en retrait par rapport au bord extérieur du couvercle. L'enveloppe (2) est en contact avec l'élément (1), de sorte que le film comprenant le matériau optoélectronique (30) est situé entre le substrat et le couvercle, et dans la zone définie par le bord surélevé (60). Un adhésif (70), situé dans un canal défini par la surface inférieure du couvercle depuis le bord extérieur jusqu'au bord, par le bord et par la surface supérieure de l'élément optoélectronique à l'extérieur de la région délimitée par le bord, sert à fixer l'enveloppe à l'élément optoélectronique.
EP00941111A 1999-05-11 2000-04-18 Dispositif electroluminescent ou a cellules photoelectriques, a conditionnement protecteur Expired - Lifetime EP1186066B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US309846 1999-05-11
US09/309,846 US6383664B2 (en) 1999-05-11 1999-05-11 Electroluminescent or photocell device having protective packaging
PCT/US2000/010392 WO2000069002A1 (fr) 1999-05-11 2000-04-18 Dispositif electroluminescent ou a cellules photoelectriques, a conditionnement protecteur

Publications (2)

Publication Number Publication Date
EP1186066A1 true EP1186066A1 (fr) 2002-03-13
EP1186066B1 EP1186066B1 (fr) 2010-12-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00941111A Expired - Lifetime EP1186066B1 (fr) 1999-05-11 2000-04-18 Dispositif electroluminescent ou a cellules photoelectriques, a conditionnement protecteur

Country Status (6)

Country Link
US (1) US6383664B2 (fr)
EP (1) EP1186066B1 (fr)
JP (1) JP4614542B2 (fr)
KR (1) KR100618299B1 (fr)
DE (1) DE60045307D1 (fr)
WO (1) WO2000069002A1 (fr)

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US20020018911A1 (en) 2002-02-14
US6383664B2 (en) 2002-05-07
DE60045307D1 (de) 2011-01-13
JP2003523044A (ja) 2003-07-29
KR100618299B1 (ko) 2006-08-31
KR20020000643A (ko) 2002-01-05

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